Question

A plugin adds to my insert mappings a mapping for <leader>is. I have some ideas which one it can be. But it does not matter I don’t want to change anything in foreign plugins. So I want to disable this mapping. I tried this:

imap <leader>is  <nop>

I did not help.

What is your suggestions?

BTW, I want to ask how disable in vimrc all insert mapping of plugins?

Answer 1

To remove an insert mode mapping, use the :iunmap command:

:iunmap <Leader>is

I don’t know whether it is possible to do “bulk unmapping”, but at least you can list all active insert mode mappings with

:imap

or, even better, with

:verbose imap

which will also tell you where the mapping has been defined in the first place.

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Edit: To clarify, the unmapping needs to be done after the plugin has been loaded. To do so, create a file with the following contents in ~/.vim/after/plugin/ (see @ZyX’s answer):

" myafter.vim: will be executed after plugins have been loaded
iunmap <Leader>is